Part of the Everyday silo, this update to the 2017 Runner's World Best Debut Harmony Road is built for neutral cushioning and a smooth ride from mile 1 to mile 300. KooshRide Foam is an innovative TPU foam midsole core engineered to provide consistent feel from beginning to end. Our TriZone midsole absorbs shock in the heel and provides responsive propulsion in the forefoot with overlap in the midfoot for a faster transition and one smooth ride.